290 SCROPHULARIACE^E. (FIGWORT FAMILY.) 



* * Leaves undivided. 



2. P. pubescens, Solander. Pubescent or smooth; leaves lanceolate, 

 acute, serrate or entire, sessile or clasping ; the lowest ovate or oblong, tapering 

 into a slender petiole ; cymes spreading, few-flowered ; tube of the corolla grad- 

 ually dilated above the middle ; the lower lip longer than the upper ; sterile 

 stamen bearded down one side; anthers smooth. (P. lasvigatus, Soland., a 

 smooth form.) Dry open woods and fence-rows, Florida to North Carolina, 

 and westward. June and July. Stem 2 high. Lowest leaves 3' - 5' long. 

 Corolla 1' long, pale purple. 



3. P. Digitalis, Nutt. Smooth or nearly so ; stem-leaves ovate-lanceolate, 

 serrate or entire, clasping ; the lowest oblong, narrowed into a petiole ; cymes 

 few-flowered, spreading, forming a narrow panicle ; tube of the corolla abruptly 

 dilated near the base ; the lips nearly equal ; sterile stamen bearded down one 

 side. Dry soil, Georgia, Florida, and westward. July. Stem. 2 high. Co- 

 rolla 9"- 12" long, white or pale purple. 



Var. multiflorus, Benth. Larger (3 -4 high) ; leaves thicker; cymes 

 many-flowered, forming a large spreading panicle ; corolla smaller. Pine bar- 

 rens, Florida. 



5. LINABIA, Juss. TOAD-FLAX. 



Calyx deeply 5-parted. Corolla personate, spurred at the base; the upper lip 

 emarginate or 2-lobed ; the lower 3-lobed ; the throat commonly closed by the 

 prominent palate. Stamens 4, didynamous. Capsule globose or ovoid, opening 

 at the apex, with few or several tooth-like valves, many-seeded. Herbs, with 

 alternate or (on the radical branches) opposite or whorled leaves, and axillary or 

 racemose flowers. 



* Stems icith prostrate branches at the base, which bear broader opposite or whorled 



leaves. 



1. L. Canadensis, Spreng. Smooth ; stem erect, slender, mostly simple ; 

 leaves linear, flat, scattered ; those on the radical branches oblong ; racemes 

 straight; pedicels erect, as long as the calyx; lobes of the small (3" -4") blue 

 and white corolla rounded ; spur filiform, curved, as long as the pedicels. (An- 

 tirrhinum Canadense, L.) Cultivated ground, common. April and May. 

 (D Stem l-2high. 



2. L. Floridana, n. sp. Stem smooth, ascending, paniculately much 

 branched ; leaves scattered, fleshy, terete, linear or club-shaped ; those on the 

 radical branches obovate ; racemes elongated, flexuous, glandular-hairy ; pedicels 

 spreading, 3-4 times as long as the calyx ; lobes of the small (2") blue corolla 

 truncate or emarginate ; spur very short. Drifting sands near the coast, West 

 Florida. April and May. (f) Stem 3' - 12' high. 



* * Prostrate branches none. 



3. L. vulgaris, Miller. Smooth ; stem erect, simple or branched ; leaves 

 alternate, linear or linear-lanceolate, crowded; raceme dense; flowers large (!' 

 long), yellow ; spur subulate ; seeds flattened, margined. Waste places, North 

 Carolina, and northward. Naturalized. Aug. ty Stem l-3 high. 



